Time-regulator for dampers of furnaces, ranges, or stoves.



R. T. GARRETT. TIME REGULATOR FOR DAMPERS 0F FURNACES, RANGES, 0RSTOVES. APPLICATION FILED AUG. 9, 1913.

1,1 1 1,713. Patented Sept. 22, 1914.

2 SHEETS-SHEET 1.

M jyNVENTOR V WITNESSES 242W 7 M BY A TTORNEY m & A

In: NORIUS PErERS CO PHOTVLITHQ. WASHINGTON, n. c.

R. T. GARRETT. TIME REGULATOR FOR DAMPERS 0P FURNACES, RANGES, 0RSTOVES.

APPLICATION FILED AUG. 9. 1913.

' Patented Sept. 22, 1914. 2 SHEETSSHEET 2.

ATTORNEY THE NORRIS PETERS CO, FHOTU-LITHCL, WASHINGTON. D

ROBERT T. GARRETT, P PHILADELPHIA, PENNSYLVANIA.

TIME-REGULATOR FOR DAMPERS OF FURNACES, RANGES, GR 353057118.

Specification of Letters Patent.

Patented Sept. 22, .1914.

Application filed August 9, 1913. Serial .No. 783,870.

To all whom it ma y concern:

Be it known that I, ROBERT T. GARRETT,

a citizen of the United States, residing at the city of Philadelphia, inthe county of Philadelphia and State of Pennsylvania,

have invented certain new and useful Improvements in Time-Regulators forDampers of Furnaces, Ranges, or Stoves, of which the following is aspecification.

My invention relates to means to manually set a time regulator for thedamper of I av furnace, range orstove to control automatically by aclock-mechanism actuation of means affecting the vfire mass of thefurnace, range or stove; and in such connection my present inventionrelates to the particular arrangement of the time regulator for thedefined purpose, as hereinafter fully described and claimed.

The nature and scope ofmy present invention will be more fullyunderstood from the following description taken in connection with theaccompanyingdrawings forming part hereof, in which- Figure 1, is a sideelevational view of a furnace provided with a time regulated damper andclock-mechanism as a part thereof, suspended from the rafters of acellar or other room, the time damper regulator being manually set, andthen controlled as to its actuation by the alarmmechanism of the clock,for operating the dampers, to respectively open and close the same andembodying the main features of my said invention. Fig. 2, is a brokensectional front elevational view on the line w-w of Fig. 3, with theface-plate of an ordinary alarm clockremoved. Fig. 3, is a verticalsectional view through the clockmechanism, showing the face-plate, hourand minute hands, the chain and weight winding means and the groovedpulley on the back of the clock secured to the shaft of thealarm-mechanism and over which the the spring controlled shaft of thealarm-;

mechanism, and also showing the cord attached to, said pulley and thedraft damper and the opposlte end having a hand-hold to manually operatefor permitting of the opening of the damper through the setting of saidalarm according to the time the chimney or draft damper is to close.Fig.

6, is a broken sectional side elevational view of therange chimneydamper in a closed position with the cord from the pulley of Fig. 5, inconnection with the damper; and Fig. 7, is an end view in broken sectionof the grooved pulley, showing the cord and screw for securing to saidpulley in the manner, as illustrated, in side view in Fig. 5.

Referring to the drawings with particular reference to Figs. l-3inclusive, 0; is a furnace of ordinary well-known construction having adamper door a located to one side of the draft-pipe a to the chimneyflue, and having an ash-pit damper door a 6, is a clock'suspended, asshown, from rafters 6 of a cellar or other apartment in which thefurnace is located. The clock as shown is provided with a chain 5carrying a weight 5 This chain is for manually winding the main springcontrolling the hour and minute hands of the clock and which clock isalso provided with an alarmmechanism 6', Fig. 2, having a setting hand 5Fig. 1. This clock represents the wellknown Ingersoll or Waltham alarmclock. On the rear of the shaft 6 of the alarmmechanism 6, is rigidlymounted a large grooved pulley wheel 5 having stop-pins 6 and 6 asillustrated in Fig. 5. The shaft 6, is provided with a coiled leafspring 22 The said shaft is journaled to a rightangular bracket 6 whichis secured to the back-plate of the clock 6, and with which bracket thestop-pins b and b, respectively engage the upper part 72 of the bracket5 when the damper is open and the lower part b, of the bracket 6 whenthe damper is closed.

The grooved pulley wheel 6', carries a cord 72, as shown. One end of thecord 6, is connected with-the ash-pit damper door a and passes over aseries of guidepulleys 6", depending from the rafters and which cordcarries a weight 5 above the connection of the other end of said cordwith the draft-damper a In dotted outline is shown in Fig. l, the openposition of the draft damper. The hook b is provided at the opposite endof the cord b", to attach to an eye 6 to the right provided in theash-pit damper door a as shown in Fig. l, for permitting of the openingof the same. To operate the time regulator under the damper arrangementof Fig. 1, when the draft damper a is to occupy an open position, it'isnecessary only to manually operate the cord 6 to set thedampers a and aThe clock is now wound up manually by the weighted chain bflandtherewith the alarmmechanism set by hand to permit the said alarm at aparticularhour to go off'and to actuate the 'springcontrolled shaft 6carrying the large grooved pulley If, to thereby cause the same torevolve and the stop-pin b, to engage the bracket 6", to thereby holdthe said pulley from further movement, at which time the draft damper ais'closed and the ash-pit doordamper a is opened.

In Figs. 4 to 7 inclusive, the time damper regulator is illustrated inapplicationto a range in which one end of'the cord b, is attached to thedraft regulator damper a of the chimney flue and the oth'er'endbeyondits fixed connection with the grooved pulley wheel I), is carriedand operated by the springcontrolled shaft b of the alarmmechanism 6 ofthe clock I). This cord 6 is provided with a hand-hold'b for drawing thesame outward to elevate the regulator damper a to the extent desired,and at the same time to wind the alarm-mechanism b of-the clock I), atsuch hour as that the tripping device 6 of said mechanism,

as illustrated in Figs. 2 and 3, can cause the Copies of this patentmay, be obtained for five cents each, by addressing the Washington, D.0.

alarm, to go off under the action of the wound up main. spring of theclock, as will be readily understood. The'winding is acc mp i d m nua lyby hecu igh chain bflwhich chain passes over a sprocket-Wheel 22asillustrated in Fig. 5. The stop-pins b and b, respectively, limit theextent of 'movement of the said pulley-wheel b", of the springcontrolled shaft 6?, of the said alarm-mechanism bflin the winding andalso in the reverse movement of the said pulley-wheel, when the'alarmiis-to go off, at aparticular selected time. s

Having thus described the nature and objects of my invention, what Iclaim as new and desire to secure byLetters Patent is In a timeregulatordamper for furnaces, etc., a clockhaving an alarm-mechanismprovided with a spring controlled shaftand a tripping-device, apulley-carried on and operated by said shaft, flexible weighted meansconnected with said pulley tocontrol the dampers and to permit ofwinding of said-mechanism, a bracket secured to the CommissionerofPatents,

